Smash preventer for looms



flame 8 1926. 1,587,913

J LIVESEY SMASH PREVENTER FOR LOOMS Filed June 1923 2 Sheets-Sheet 1 June 8,1926, 1,587,913-

J. LIVESEY SMASH PREVENTER FOR Looms File June 1923 2 Sheets-Sheet 2 Patented June 8, 1926.

ATENT OFFICE.

JOHN LIVESEY, OF NEW BEDFORD, MASSACHUSETTS, ASSIGNOR TO CROIVIPTON & KNOWLES LOOM WORKS, 015 W'OBGESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

SMASH PREVENTER FOR LOOMS.

Application filed June 28, 1923. Serial No. 648,357.

This invention is particularly designed for use in drop box looms having a plurality of shuttles and has for its object the stopping of the loom whenever the shuttle box about to receive the active shuttle is already occupied by a second shuttle.

More specifically, it is the object of my invention to provide loom stopping mech anism which will become operative whenever either shuttle box is occupied as the lay approaches back center, at which time the active shuttle will be in flight.

In the preferred form of my invention, the mechanism operates by releasing the shipper handle and applying the brakes to stop the loom in the usual manner. My invention may be used in combination with the usual protector rod and dagger which stops the loom when the shuttle fails to box as the lay approaches front center, and the invention may also be used in combination with loom stopping devices controlled by the warp stop motion.

A preferred form of my invention is shown in the drawings in which-- Fig. 1 is a side elevation of parts of a loom embodying my improvements, the lay and shuttle box being shown in section;

Fig. 2 is a view similar to Fig. 1 but showing the parts in a different position;

Fig. 3 is a plan view of the parts shown in Fig. 1; and

Fig. 4 is a side elevation indicating the operation of the usual protector rod and dagger with which my invention may be combined.

Referring to the drawings, I have shown a portion of a loom side 10, a lay 11, a shuttle box 12, a shuttle S, a binder 13, a shipper handle 14 and a knock-oft lever 15, all of the usual and common construction. The shipper handle is formed with a resilient or spring portion 16 and is held in operative position in a notch 17 at one end of a slot 18 in a bracket 19. When the shipper handle is pushed out of the notch 17 it snaps quickly to the opposite end of the slot 18, releasing the power and applying the brake to stop the loom.

The usual protector rod 20 extends lengthwise oi the lay 11 and is provided at each end with a protector finger 21 engaging the corresponding binder 13. A spring (not shown) holds the fingers 21 against the binders 13 and so-oalled da-ggers 22 are provided for engagement with stop plates 23, one of which is extended to engage the shipper handle 14.

The lay 11 is provided with a plurality of shifting or drop boxes at one or both ends thereof which are of the usual construction and in themselves form no part of my pres ent invention. For a full disclosure of the construction and operation oi such shifting shuttle boxes, reference is made to the prior patent to Ohevrette, No. 987,110, issued March 21, 1911.

A link 24 is loosely pivoted at 25 to the knock-oft lever 15 and at its rear end may be supported upon a rocker 26 connected by an arm 2? and rod 28 to a warp stop motion (not shown).

A lug 29 may be secured on the rod or link 24 and upward movement of the link by rocking movement of the support 26 in either direction will bring the lug 29 into position for engagement by a member 30 fixed to the lay 11 and movable therewith. This method of supporting the link 24 and operating the same from a warp stop motion forms no part of my invention and is shown substantially as disclosed in the prior patent to Richardson No. 1,268,152, issued June 4, 1918.

In the preferred embodiment of my invention, I provide a second lug or projection 31 on the link 24 and an engaging arm 32 on the protector rod 20. The lug 31 may be adjustable on the link 24 and is located in such a position that the lug will just clear the arm 32 at back center, provided both shuttle boxes are empty. This is the normal condition at this point of operation, as the active shuttle is then in flight across the lay. This relation of the parts is indicated in Fig. 1.

If, however, through some error in the operation of the drop box mechanism, a sec- 0nd shuttle should occupy the box at the opposite end of the lay, the corresponding binder 13 would be forced outward as inclicated in Fig. 2, moving the rod 20 angularly and swinging the arm 82 rearward to engage the lug 80. With the parts in this position, the link 24 will be forced rearwardly as the lay approaches back center and the knockoff lever 15 will act to release the shipper handle 14. As soon as the shipper is released, the brakes will be applied and the lay will be stopped before it advances suiticiently to force the running shuttle against the warp threads and produce a smash therein.

The usual operation of the protector mechanism when the active shuttle fails to box properly is indicated in Fig. 4, which shows that when the boxes are both empty as the lay approaches front center, the daggers 22 will be raised to engage the stop plates 23 and prevent further forward movement of the lay, at the same time releasing the shi per handle 14.

If the warp stop motion operates to raise the lug 29 into the path of the projection 30, these parts will engage somewhat earlier than the lug 31 and arm 32 and will, stop the loom in a similar manner.

It is thus evident that the loom may be stopped by the warp stop motion, the smash protector, or the usual protector mechanism and dagger, and that each of these stopping devices is free to operate independently of each of the other devices. It will further appear that by the simple additionof the lug 31 on the link 34 and the arm 32 on the protector rod 20, I am able to equip this type of loom with very eifective mechanism for stopping the loom and preventing a smash if a shuttle is accidentally picked to a full box.

Having described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed otherwise than as set forth in the claims, but what I claim is In a loom having a warp stop motion, a lay having shuttle boxes at its ends, a shipper, a knock-off lever therefor, a rod connected to said knock-off lever, a rocker connected to said warp stop motion and operable to raise the rear end of said rod, alug on said rod, :1 device on said lay engaged by said lug when the latter is in raised position, whereby said rod is moved to stop the loom, a second lug on said rod, a protector rod on said lay co-operating with both run ning shuttle boxes, and an arm on said protector rod positioned to engage said second lug and stop the 100111 as the lay approaches back center it either box is occupied by a shuttle.

In testimony whereof I have hereunto aflixed my signature.

JOHN LIVESEY. 

